DE7144336U - Device for displaying a switching process, especially in the case of temperature monitors - Google Patents

Description

INTER CONTROL

Hermann Koehler electrics

GmbH & Cr KG

85ΟΟ Nuremberg
Schafhofstrasse 30

Device for displaying a switching process, especially in the case of temperature monitors

The innovation concerns a display device for displaying a Switching process for temperature monitors.

The use of temperature monitors to monitor the temperature is known for the most diverse * areas of application. Temperature guard ter were used in devices or systems in which a certain temperature must not be exceeded.

When a certain temperature is reached, the temperature interrupts monitors the electrical circuit of the device or system. Only after lowering the temperature to a lower value does the temperature switch - Guardian again. The temperature monitor shows a large switch-back difference of approx. 20 ° C. This value is sufficient to monitor the temperature.

In various cases, temperature monitors are used in conjunction with a temperature controller. The temperature monitor serves as a safety device, which then comes into operation when the temperature regulator no longer controls the temperature for any reason. This is done, for example, when regulating the temperature of heating systems. The disadvantage here is that with this insensitive control system, a failure of the temperature controller cannot be detected for a long time . Here it is usually the case that the TemperaWr monitor then takes over the functions of the temperature controller with a switching differential that is much too large.

The purpose of the innovation is now to create a device which When the temperature monitor is switched off for the first time, it controls a warning circuit that informs an observer (e.g. in an apartment) that the TemperaturrcglcrG displays. This task is now solved in such a way that that a contact set is attached to the temperature monitor in such a way that it closes the warning circuit if the temperature monitor fails performs the first shutdown. The device is also created in such a way that its contacts close during the following temperature cycle remain and can only be opened manually after recognizing the error.

The innovation is explained in more detail below with the aid of drawings. Show it:

Fig. 1 shows the device according to the innovation in section in the rest position before switching,

2 shows the arrangement of the contacts before the first switching,

3 shows the device according to the innovation after the first switching process,

4 shows the associated arrangement of the contacts,

5 shows the device according to the innovation after switching back in the starting position.

In Figs. 1, 3 and 5, the device is in connection with a Temperature monitor exemplary embodiment for the various switching positions shown.

The temperature monitor shown in the drawings is a temperature monitor with a spring disk as a heat sensor. It is of course also possible to use the display device to be used with temperature monitors with other heat sensors.

1 with an electrically isolate the base is referred to, in which the main connections 2 and 3 are arranged. 4 is a housing in which the bimetallic spring washer 5 is mounted. This jump disk is in engagement with the guide pin 6, which is used for actuation of the contact arm 7 is used. The guide pin is guided in a hole in the base 1 and is also still loosely with the plunger 8 Intervention.

On both sides of the plunger 8 are the resilient contact arms 9 and 10. The contact arms 9 and 10 are attached to the connections 13 and 14, to which a warning circuit 15t consisting of a power source 16 and for example a warning lamp 17 is connected ..

The plunger 8 has a recess on its circumference, into which after activating the temperature monitor, the resilient contact arms 9 and 10 grip,

Fig. 1 shows the temperature monitor in the rest position, i.e. the main current - circle 2–3 is closed. As can be seen from Fig. 2, this is the Urinary circuit 15 de-energized because contacts 11 and 12 are open.

It snaps when the set monitoring temperature is reached Bimetal jump element to another position and actuated by the guide pin 6, the contact arm 7. At the same time, the plunger 8 is from Guide pin 6 pushed up. The contact arms 9 and 10 snap into the recess 18 of the plunger 8 (see rig. 3 and 4).

Fig. 4 shows the warning circuit 15 with closed contacts 11 and If the temperature now falls, the bimetallic spring disk 5 snaps back into its rest position at a certain temperature. The guide pin 6 also goes back to its starting position and with it the contact arm 7. Now the circuit 2-3 is closed again.

By the resilient forces of the contact arms 9 and 10, however, the The plunger 8 is held in its previous position so that the contacts 11 and 12 remain closed. The warning circle 15 remains now closed until the plunger 8 is brought out of this position by hand, for example.

Fig. 5 shows the temperature monitor with activated warning circuit and Temperature monitor setting "on". From the drawing it can be seen that at the point 19 the guide pin 6 with the plunger 8 is not is more engaged.

Identical parts are identified identically in the various figures.

Claims (2)

INTER CONTROL Hermann Köhler Elektrik GmbH & Co KG 85OO Nuremberg Schafhofstrasse 30 protection claims 1. Device for controlling the operating state of an electrical circuit for displaying a switching state of an electrical switching device, in particular a temperature monitor, characterized in that it has contacts (11) and (12) and an actuator (8) engages with an organ of the electrical switching device stands. 2. Device according to claim 1, characterized in that the contacts (11) and (12) are arranged on resilient contact arms (9) and (1O), which at one end are electrically conductive with the connections (13) and (14) of the Urinary circle (15) are connected and approximately in their center are in engagement with an actuating member (8) in such a way that when the actuating member (8) moves, the contact arms (9) and (1O) snap into a recess (18) and the contacts are closed.